5101.19.20.00 - Unimproved wool; other wool, not finer than 40s

This HTS classification, 5101.19.20.00, pertains to greasy wool that is not carded or combed, and falls under the "other" category within unimproved wool and wool not finer than 46s. This specific code is applied to wool where the fineness is *not* finer than 40s, excluding those finer than 40s but not finer than 44s, and also excluding those finer than 44s. Essentially, it covers coarser grades of greasy wool that do not meet the finer quality specifications of its sibling categories.

The distinction between 5101.19.20.00 and its siblings lies precisely in the fineness of the wool. Categories 5101.19.40.00 and 5101.19.50.00 are designated for wool that is finer than 40s, with further subdivisions based on whether it is finer than 44s. Therefore, 5101.19.20.00 captures the broadest range of these coarser, unimproved greasy wools, serving as a residual category for wools meeting the general criteria but not falling into the more specific finer grades.

As this classification represents a leaf node within the HTS, there are no further subcategories. This means that goods classified under 5101.19.20.00 are considered the most specific classification available. Importers and exporters should carefully assess the actual micron count or count (a measure of fineness) of their greasy wool to ensure accurate classification, confirming that it does not fall into the finer categories outlined by sibling codes.